The book chapter is based on StackExchange's data blob from August 2012: http://www.clearbits. net/get/2076-aug-2012.torrent

After publishing the book, StackExchange stayed as awesome as it always has been and released an updated version: http://www.clearbits.net/get/2155-sept-2013.torrent

Note that using the latest version, you will get slightly different results.

Note that one script is using pyenchant, which is not yet supported on Windows' 64bit version.